Fireproof stone



e, YAMANOUCHI'. FIREPROOF STONE.

APPLICATION FILED JUNE 9. 1919.

Patented Mar. 14, 1922.

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' GJYAMANOUCHL HREPROOF STONE. APPLICATION FlLED !UNE 9.1919.

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GENKICHI YAMANOUCHI, OEEBARAGUN, TOKYO, JAPAN.

V rranrnoor Strona.

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Application filed June 9, 1919. Serial No. 802,&55.

' To aZ'Z whom't may concrn:

Be it known that GnNKrcHr YAMANOUOHI, a subject of the Emperor of Japan,residing at No. 124 Nakano-cho, Yawato, Omerimachi, Ebaragun, TokyoProvnce, Japan,

has en d ce tai new* a d useful i provenents in Fireproof Stone, o fwhich the fellwng i a pe fij at e *This invention 'relates toimprovement in r p of c te blocksand mer Pa furnish a block having alarge interior space, and the ends of the block are provided with smallapertures which communicate with the space.

Another object of the present invention is to provide an improved blockof the above character which when incorporated in a wall formed ofsimilar blocks, will provide a wall having the same or greater strengthat the joints as through anyportion of the blocks. As the top and bottomwall of the blocks are comparatively thick in section, the blocks whensuperposed in the `wall will have at least equal or perhaps greaterstrength at the joints than in any other section through the blocks.This is a very important feature as in many localities, laws orregulations are in force in connection with build ing Construction whichrequire that the joints be at least equalin strength to the otherportions of the wall. V

Blocks constructed in accordance with the present invention have siderecesses which are adapted to receive vertical reinforcing bars andmortar that secures the blocks in position, and the apertures in the endwalls of each block are spaced from the side recesses so that the mortarused at the sides of the block is not liable to enter andobstruct saidapertures. The block is also provided with upper and 'lower 'grooveswhich are arranged at each side of the apertures in the end walls of theblock and are adapted to receive horizontally arranged reinforcing barsand mortar for securing these bars in position. A wall constructed wthblocks of this character has unobstructed vertical passageways whichextend from the top to the bottom of the wall and these passageways maybe utilized for the storage of electric conduits, sound tubes, plumbngpipes, etc. Moreover. air in the vertical passageways may circulate andmaintain the blocks in dry condition.

The invention is llustrated in the accompanying drawings in which: e I IFigure 1 is a side View of one of the* improved blocks.

Fig. 2 is a face view of the same. g Fig. 3 is a top plan view of theblock.

Specificaton of Letters Patent ,Patent ed Dial'. 14 1922.

F'g. 4 is a vertical transverse section'al V w 'of the block.

Fig. 5 is a vertical l'ongitudinal sfctional View of the block.

,e Fg f a nt se pnal w' ak The 'primary object of the invention i's tointermediate the ends of the block;

e Fig. 7 is a horizontal sectional view taken 'through one of the endwall's of the block.

Fig. 8 is a detail view of a 'portion f a *building formed of theimproved bl'ocks'.

Fig. 9 is a horizontal sectional View of the construction shown inFigure 8.

Fig. 10 is a perspective view of a portion of a building formed of theimproved blocks.

Fig. 11 is a detail perspective view of -a portion of a wall formed ofthe blocks,

- partly broken away for the purpose of illus- 5 within the blobk. Itwill also be noted that the end walls 3 are of greater thickness thanthe face walls 1 and side-walls 2, so that a wall constructed ofthese'blocks will have great strength at its bottom joints. ,The sidewalls are provided with semi-oval shaped reces'ses A in order to receivevertical reinforcing bars B and the mortar which secures saidbarsinvpositio'n; The endwalls 3 of the block are 'provided with grooves 6which are arra-nged on opposite sides of the apertures 4 and are adaptedto receive horizontally disposed reinforcing bars C and the mortar whichsecures said bars in position.

When the blocks are placed in a wall the hollow space 5 of each blockcommunicates i with the hollow spaces of the blocks above and belowthrough the apertures 4 'and owing to thepresent construction theapertures 4 will always be unobstructed as the grooves inthe end walls 3are spaoed from l shown in deteil the manner of connecting the blocksWith the reinforcing metal bars B and C.

From the foregoing, I believe that the construction, advantages andoperation of my improved blocks may be rcadily understood by thoseskilled in the art, and I am aware that various changes may be made inthe ,Construction illustrated, Without departing from the spirit of theinvention as expressed in the following claim: V

What I claim and desire to secure by Letters-Patent is:

A fire-proof artificial stone block having oppositely disposed front andrear walls, s degwells connectng seid front and rear Walls together andprovided With recesses designed to receive reinforcing metal bars andmortar for securing the side Welle to adjecent blocks, thickened endWalls connected to the front and reer and side WaHs,

all of seid wells enclosing a, comparatively large interier chamber,each end Wall being provided With a comperatively small apertu e, thecross section of which is much 'smaller than the front section of saidCham'- berfand the end Walls being provided with grooves arranged onopposte side of the end apertures and c designed to receive reinforcingbars and nortar for securng the block to blocks'arranged above and belowsaid block.

'In testimony hereof he affixes his signa ture in the presence of twowitnesses.

-GENKICHI YAMANOUCHI.

VVitnesses p GENJI KUSIBARA P. KANENCH.

